[1]吴龙科,任光明,郑秀红,等.西北某坝肩变形体成因机制的离散元数值模拟[J].山地学报,2015,(01):81.
　WU Longke,REN Guangming,ZHENG Xiuhong,et al.Formation Mechanism of the Deforming Slope in Left Dam Abutment of a Hydroelectric Power Station in Northwest China with and Discrete Element Simulation Method[J].Mountain Research,2015,(01):81.
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西北某坝肩变形体成因机制的离散元数值模拟()
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《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2015年01期
页码:
81
栏目:
山地灾害
出版日期:
2015-02-01

文章信息/Info

Title:
Formation Mechanism of the Deforming Slope in Left Dam Abutment of a Hydroelectric Power Station in Northwest China with and Discrete Element Simulation Method
作者:
吴龙科;任光明;郑秀红;陈超;沈启香;王飞;王海涛;
地质灾害防治与地质环境保护国家重点实验室(成都理工大学);中国水电顾问集团西北勘测设计研究院;
Author(s):
WU Longke; REN Guangming; ZHENG Xiuhong; CHEN Chao; SHENG Qixiang; WANG Fei; WANG Haitao
1. State Key Laboratory of Geohazard Prevention and Geoenvironment Protection，Chengdu University of Technology，Chengdu 610059,China； 2. Northwest Investigation & Design Research Academy，State Power Corporation，Xi’an 710065，China
关键词:
地震; 顺层岩质边坡; 成因机制; 离散元数值模拟
Keywords:
earthquake; rock bedded slope; genetic mechanism; discrete element numerical simulation
分类号:
P642.2，TU457
文献标志码:
A
摘要:
通过对西北某坝肩边坡勘探平硐的现场调查,综合分析边坡的基本特征、岩体结构特征、坡体结构特征、变形破坏特征,认为坡体为形成年代比较久远的变形体,在自重的作用下坡体发生缓慢的变形,地震的作用加速了坡体的变形,从而形成了现今的变形体,但坡体未发生整体的失稳。由于坡体变形年代比较久远,故采用离散元数值模拟对其成因机制进行研究。研究结果表明:自重作用下坡体有沿缓倾坡外层面缓慢滑移变形的趋势,在地震荷载的作用下最终诱发边坡发生比较大的变形。坡体在变形过程中经历了启动、高速变形和自稳3个阶段,在启动阶段坡肩位置首先出现拉张裂缝,然后坡体中部出现变形,最后坡脚位置剪出。通过坡体中监测点加速度、速度的研究发现随...
Abstract:
Through the investigation of deformed slope in left dam in northwest china by Exploration adits, the article research the basic characteristics, rock mass structure characteristics, structural characteristics of slope, deformation characteristics of slop. Come to a conclusion that the deformed slop formed for a long time. The deformation occurs slowly in the action of gravity, then, Earthquake accelerated the deformation of slop. Thus the deformed slop was formed, the slop had no overall instability. Due to the deformed slop formed in a long time, the article research formation mechanism of the deformed slope in left dam abutment of a hydroelectric power station in northwest China with discrete element simulation method. The results show that deforming slope inclined gently by the lowangle rock level under the action of gravity and was instability under seismic loads. The simulation of the subsequent movement of the slope shows that the movement mode of deformable body is startingup →highspeed sliding→selfstabilized. Slop shoulder position fist appear tensile crack in the startup phase, then the middle of slop deformed, finally cut out in the bottom of slop. Topographic amplification effects are also observed from both acceleration and velocity of the monitoring points of the slope.

参考文献/References:

[1] Hao Jianbing，Men Yuming，Peng Jianbing. Research on dynamic stability [J].Rock and Soil Mechanical，2005，22（6）:72-75[郝建斌，门玉明，彭建兵. 层状岩体边坡动力稳定性模型试验研究[J].公路交通科技，2005，22（6）: 72-75]
[2] Dong Jinyu，Yang Goxiang，Wu Faquan,et al. The largescale shaking table test study of dynamic response and failure mode of bedding rock slop under earthquake[J].Rock and Soil Mechanical，2009，32（10）：2977~2983[董金玉，杨国香，伍法权，等. 地震作用下顺层岩质边坡动力响应和破坏模式大型振动台试验研究[J].岩土力学，2009，32（10）：2977-2983]
[3] Wang Laigui，Zhao Na，Li Tianbin，et al. Finite element simulation of collapse and sliding of slop with signal weak plane induced by strong earthquake[J].Chinese Journal of Rock Mechanics and engineering. 2009，28(Suppl.1)：3163-3167[王来贵，赵娜，李天斌，等. 强震诱发单一弱面斜坡塌滑有限元模拟[J].岩石力学与工程学报，2009，28(增1)：3163-3167]
[4] Zheng Yingren，Ye Hailin，Huang Runqiu. Analysis and discussion of failure mechanism and fracture surface of slop under earthquake[J].Chinese Journal of Rock Mechanics and Engineering，2009，28（8）：1714-1723[郑颖人，叶海林，黄润秋.地震边坡破坏机制及其破裂面的分析探讨[J].岩石力学与工程学报，2009，28（8）：1714-1723]
[5] Cui Fangpeng，Hu Ruilin，Yin Yaoping. Numerical simulation of slop collapsing and sliding due to single or combined actions of seismic P-and-S waves with time difference[J]. Journal of Engineering Geology.2009，17(4):455-462[崔芳鹏，胡瑞林，殷跃平，等.地震纵横波时差耦合作用的斜坡崩滑效应研究[J].工程地质学报，2009，17(4):455-462]
[6] Be Zhongwei，Zhang Ming，Jin Feng，et al. Dynamic response of slops under earthquakes [J].Rock and Soil Mechanics.2009，30（Suppl.1）：180-183[毕忠伟，张明，金峰，等. 地震作用下边坡的动态响应规律研究[J].岩土力学，2009，30（增1）：180-183]
[7] Liu Hanxiang，Xu Qiang，Fan Xuanmei. Effects of seismic parameters on acceleration responses of slopes [J]. Journal of Earthquake Engineering and Engineering Vibration，2012,32(2): 441-447[刘汉香，许强，范宣梅. 地震动参数对斜坡加速度动力响应规律的影响[J].地震工程与工程震动，2012，32（2）:441-447]
[8] Liu Hanxiang，Xu Qiang，Fan Xuanmei，et al. Influence of ground motion intensity on dynamic response laws of slope accelerations [J]. Rock and Soil Mechanics，2012，3（5）：1357-1365[刘汉香，许强，范宣梅，等. 地震动强度对斜坡加速度动力响应规律的影响[J].岩土力学，2012,3（5）：1357-1365]
[9] Seed H B，Clough R W. Earthquake resistance of sloping core dam[J].Journal of the Soil Mechanicals and Foundations Division，ASCE，1963，89(1)209-241
[10] Kuhlem R L，Lysmer J. Finite element method accuracy for wave propagation problem [J].Journal of the Soil Mechanicals and Foundations Division，ASCE，1973,99（5）：421-417
[11] Men Yuming，Peng Jianbing，Li Xunchang，et al. Research on vibration testing of models for dynamic stability of rock slope with layered structures[J].World earthquake engineering，2004，20（4）：0131-0136[门玉明，彭建兵，李寻昌，等. 层状结构岩质边坡动力稳定性试验研究[J].世界地震工程，2004，20（4）131-136]
[12] Hou Hongjuan，Xu Qiang，Liu Hanxiang，et al. Dynamic response characteristics of horizontal slopes subjected to seismic ground motions in different directions [J]. Journal of Earthquake Engineering and Engineering Vibration，2013，33（2）:0214-0220[侯红娟， 许强， 刘汉香，等.不同方向地震动作用下水平层状边坡动力响应特性[J].地震工程与工程震动，2013，33（2）:214-220]

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备注/Memo

备注/Memo:
收稿日期(Received date)：2014-04-02；改回日期(Accepted)：2014-05-22。
基金项目(Foundation item)：国家自然科学
基金项目(41072229) 。[Supported by National Nature Science Foundation of China(NO：41072229).]
作者简介（Biography）：吴龙科（1987-），男，在读硕士，工程地质专业 [Wu Longke，master degree candidate ，major in engineering geology.] E-mail:wulongke1202@163.com
更新日期/Last Update: 1900-01-01